nCO2 = 3.36/22.4 = 0.15 (mol)
nCa(OH)2 = 0.125*1 = 0.125 (mol)
nCO2 / nCa(OH)2 = 0.15/0.125 = 1.2
=> Tạo ra 2 muối
Đặt :
nCaCO3 = x (mol)
nCa(HCO3)2 = y (mol)
BT Ca :
x + y = 0.125
BT C :
x + 2y = 0.15
=> x = 0.1
y = 0.025
C M Ca(HCO3)2 = 0.025/0.125 = 0.2 (M)
nCO2=0,15 mol, nBa(OH)2=0,125 mol
1<nOH-/nCO2=0,25/0,15=1,67<2 => Tạo 2 muối
BaCO3: x
Ba(HCO3)2: y
x+y=nBa2+=0,125
x+2y=nC=0,15
=>x=0,1; y=0,025
CM Ba(HCO3)2=0,025/0,125=0,2M